Hightower/ Constructicons

Timelines Classics comics
Note: The Classics comics continue from the Marvel G1 comics, but disregard G2 and Marvel UK.
The Constructicons were among the troops that Megatron covertly rebuilt on Earth after Bludgeon's defeat and exile. Both Hook and Mixmaster were curiously absent from team, with the enigmatic Hightower in their place. It's unclear why this was, but Hightower himself joked about stripping enough spare parts off of Grimlock to "build a new Hook." Crossing Over: Part 6